Changeset 937:d4e911acef3d in lemon0.x for src/lemon/smart_graph.h
 Timestamp:
 10/04/04 19:13:21 (19 years ago)
 Branch:
 default
 Phase:
 public
 Convert:
 svn:c9d7d8f590d60310b91f818b3a526b0e/lemon/trunk@1264
 File:

 1 edited
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 Unmodified
 Added
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src/lemon/smart_graph.h
r921 r937 27 27 #include <lemon/invalid.h> 28 28 29 29 30 #include <lemon/array_map.h> 30 #include <lemon/sym_map.h>31 31 32 32 #include <lemon/map_registry.h> … … 299 299 }; 300 300 301 302 303 class SymSmartGraph : public SmartGraph { 304 typedef SmartGraph Parent; 305 public: 306 307 typedef SymSmartGraph Graph; 308 309 typedef SmartGraph::Node Node; 310 typedef SmartGraph::NodeIt NodeIt; 311 312 class SymEdge; 313 class SymEdgeIt; 314 315 class Edge; 316 class EdgeIt; 317 class OutEdgeIt; 318 class InEdgeIt; 319 320 template <typename Value> 321 class NodeMap : public Parent::NodeMap<Value> { 322 public: 323 NodeMap(const SymSmartGraph& g) 324 : SymSmartGraph::Parent::NodeMap<Value>(g) {} 325 NodeMap(const SymSmartGraph& g, Value v) 326 : SymSmartGraph::Parent::NodeMap<Value>(g, v) {} 327 template<typename TT> 328 NodeMap(const NodeMap<TT>& copy) 329 : SymSmartGraph::Parent::NodeMap<Value>(copy) { } 330 }; 331 332 template <typename Value> 333 class SymEdgeMap : public Parent::EdgeMap<Value> { 334 public: 335 typedef SymEdge KeyType; 336 337 SymEdgeMap(const SymSmartGraph& g) 338 : SymSmartGraph::Parent::EdgeMap<Value>(g) {} 339 SymEdgeMap(const SymSmartGraph& g, Value v) 340 : SymSmartGraph::Parent::EdgeMap<Value>(g, v) {} 341 template<typename TT> 342 SymEdgeMap(const SymEdgeMap<TT>& copy) 343 : SymSmartGraph::Parent::EdgeMap<Value>(copy) { } 344 345 }; 346 347 // Create edge map registry. 348 CREATE_EDGE_MAP_REGISTRY; 349 // Create edge maps. 350 CREATE_EDGE_MAP(ArrayMap); 351 352 class Edge { 353 friend class SymSmartGraph; 354 friend class SymSmartGraph::EdgeIt; 355 friend class SymSmartGraph::OutEdgeIt; 356 friend class SymSmartGraph::InEdgeIt; 357 358 protected: 359 int id; 360 361 Edge(int pid) { id = pid; } 362 363 public: 364 /// An Edge with id \c n. 365 366 Edge() { } 367 Edge (Invalid) { id = 1; } 368 369 operator SymEdge(){ return SymEdge(id >> 1);} 370 371 bool operator==(const Edge i) const {return id == i.id;} 372 bool operator!=(const Edge i) const {return id != i.id;} 373 bool operator<(const Edge i) const {return id < i.id;} 374 // ///Validity check 375 // operator bool() { return n!=1; } 376 }; 377 378 class SymEdge : public SmartGraph::Edge { 379 friend class SymSmartGraph; 380 friend class SymSmartGraph::Edge; 381 typedef SmartGraph::Edge Parent; 382 383 protected: 384 SymEdge(int pid) : Parent(pid) {} 385 public: 386 387 SymEdge() { } 388 SymEdge(const SmartGraph::Edge& i) : Parent(i) {} 389 SymEdge (Invalid) : Parent(INVALID) {} 390 391 }; 392 393 class OutEdgeIt { 394 Parent::OutEdgeIt out; 395 Parent::InEdgeIt in; 396 public: 397 OutEdgeIt() {} 398 OutEdgeIt(const SymSmartGraph& g, Edge e) { 399 if ((e.id & 1) == 0) { 400 out = Parent::OutEdgeIt(g, SymEdge(e)); 401 in = Parent::InEdgeIt(g, g.tail(e)); 402 } else { 403 out = Parent::OutEdgeIt(INVALID); 404 in = Parent::InEdgeIt(g, SymEdge(e)); 405 } 406 } 407 OutEdgeIt (Invalid i) : out(INVALID), in(INVALID) { } 408 409 OutEdgeIt(const SymSmartGraph& g, const Node v) 410 : out(g, v), in(g, v) {} 411 OutEdgeIt &operator++() { 412 if (out != INVALID) { 413 ++out; 414 } else { 415 ++in; 416 } 417 return *this; 418 } 419 420 operator Edge() const { 421 if (out == INVALID && in == INVALID) return INVALID; 422 return out != INVALID ? forward(out) : backward(in); 423 } 424 425 bool operator==(const Edge i) const {return Edge(*this) == i;} 426 bool operator!=(const Edge i) const {return Edge(*this) != i;} 427 bool operator<(const Edge i) const {return Edge(*this) < i;} 428 }; 429 430 class InEdgeIt { 431 Parent::OutEdgeIt out; 432 Parent::InEdgeIt in; 433 public: 434 InEdgeIt() {} 435 InEdgeIt(const SymSmartGraph& g, Edge e) { 436 if ((e.id & 1) == 0) { 437 out = Parent::OutEdgeIt(g, SymEdge(e)); 438 in = Parent::InEdgeIt(g, g.tail(e)); 439 } else { 440 out = Parent::OutEdgeIt(INVALID); 441 in = Parent::InEdgeIt(g, SymEdge(e)); 442 } 443 } 444 InEdgeIt (Invalid i) : out(INVALID), in(INVALID) { } 445 446 InEdgeIt(const SymSmartGraph& g, const Node v) 447 : out(g, v), in(g, v) {} 448 449 InEdgeIt &operator++() { 450 if (out != INVALID) { 451 ++out; 452 } else { 453 ++in; 454 } 455 return *this; 456 } 457 458 operator Edge() const { 459 if (out == INVALID && in == INVALID) return INVALID; 460 return out != INVALID ? backward(out) : forward(in); 461 } 462 463 bool operator==(const Edge i) const {return Edge(*this) == i;} 464 bool operator!=(const Edge i) const {return Edge(*this) != i;} 465 bool operator<(const Edge i) const {return Edge(*this) < i;} 466 }; 467 468 class SymEdgeIt : public Parent::EdgeIt { 469 470 public: 471 SymEdgeIt() {} 472 473 SymEdgeIt(const SymSmartGraph& g) 474 : SymSmartGraph::Parent::EdgeIt(g) {} 475 476 SymEdgeIt(const SymSmartGraph& g, SymEdge e) 477 : SymSmartGraph::Parent::EdgeIt(g, e) {} 478 479 SymEdgeIt(Invalid i) 480 : SymSmartGraph::Parent::EdgeIt(INVALID) {} 481 482 SymEdgeIt& operator++() { 483 SymSmartGraph::Parent::EdgeIt::operator++(); 484 return *this; 485 } 486 487 operator SymEdge() const { 488 return SymEdge 489 (static_cast<const SymSmartGraph::Parent::EdgeIt&>(*this)); 490 } 491 bool operator==(const SymEdge i) const {return SymEdge(*this) == i;} 492 bool operator!=(const SymEdge i) const {return SymEdge(*this) != i;} 493 bool operator<(const SymEdge i) const {return SymEdge(*this) < i;} 494 }; 495 496 class EdgeIt { 497 SymEdgeIt it; 498 bool fw; 499 public: 500 EdgeIt(const SymSmartGraph& g) : it(g), fw(true) {} 501 EdgeIt (Invalid i) : it(i) { } 502 EdgeIt(const SymSmartGraph& g, Edge e) 503 : it(g, SymEdge(e)), fw(id(e) & 1 == 0) { } 504 EdgeIt() { } 505 EdgeIt& operator++() { 506 fw = !fw; 507 if (fw) ++it; 508 return *this; 509 } 510 operator Edge() const { 511 if (it == INVALID) return INVALID; 512 return fw ? forward(it) : backward(it); 513 } 514 bool operator==(const Edge i) const {return Edge(*this) == i;} 515 bool operator!=(const Edge i) const {return Edge(*this) != i;} 516 bool operator<(const Edge i) const {return Edge(*this) < i;} 517 518 }; 519 520 ///Number of nodes. 521 int nodeNum() const { return Parent::nodeNum(); } 522 ///Number of edges. 523 int edgeNum() const { return 2*Parent::edgeNum(); } 524 ///Number of symmetric edges. 525 int symEdgeNum() const { return Parent::edgeNum(); } 526 527 /// Maximum node ID. 528 529 /// Maximum node ID. 530 ///\sa id(Node) 531 int maxNodeId() const { return Parent::maxNodeId(); } 532 /// Maximum edge ID. 533 534 /// Maximum edge ID. 535 ///\sa id(Edge) 536 int maxEdgeId() const { return 2*Parent::maxEdgeId(); } 537 /// Maximum symmetric edge ID. 538 539 /// Maximum symmetric edge ID. 540 ///\sa id(SymEdge) 541 int maxSymEdgeId() const { return Parent::maxEdgeId(); } 542 543 544 Node tail(Edge e) const { 545 return (e.id & 1) == 0 ? 546 Parent::tail(SymEdge(e)) : Parent::head(SymEdge(e)); 547 } 548 549 Node head(Edge e) const { 550 return (e.id & 1) == 0 ? 551 Parent::head(SymEdge(e)) : Parent::tail(SymEdge(e)); 552 } 553 554 Node tail(SymEdge e) const { 555 return Parent::tail(e); 556 } 557 558 Node head(SymEdge e) const { 559 return Parent::head(e); 560 } 561 562 NodeIt& first(NodeIt& v) const { 563 v=NodeIt(*this); return v; } 564 EdgeIt& first(EdgeIt& e) const { 565 e=EdgeIt(*this); return e; } 566 SymEdgeIt& first(SymEdgeIt& e) const { 567 e=SymEdgeIt(*this); return e; } 568 OutEdgeIt& first(OutEdgeIt& e, const Node v) const { 569 e=OutEdgeIt(*this,v); return e; } 570 InEdgeIt& first(InEdgeIt& e, const Node v) const { 571 e=InEdgeIt(*this,v); return e; } 572 573 /// Node ID. 574 575 /// The ID of a valid Node is a nonnegative integer not greater than 576 /// \ref maxNodeId(). The range of the ID's is not surely continuous 577 /// and the greatest node ID can be actually less then \ref maxNodeId(). 578 /// 579 /// The ID of the \ref INVALID node is 1. 580 ///\return The ID of the node \c v. 581 static int id(Node v) { return Parent::id(v); } 582 /// Edge ID. 583 584 /// The ID of a valid Edge is a nonnegative integer not greater than 585 /// \ref maxEdgeId(). The range of the ID's is not surely continuous 586 /// and the greatest edge ID can be actually less then \ref maxEdgeId(). 587 /// 588 /// The ID of the \ref INVALID edge is 1. 589 ///\return The ID of the edge \c e. 590 static int id(Edge e) { return e.id; } 591 592 /// The ID of a valid SymEdge is a nonnegative integer not greater than 593 /// \ref maxSymEdgeId(). The range of the ID's is not surely continuous 594 /// and the greatest edge ID can be actually less then \ref maxSymEdgeId(). 595 /// 596 /// The ID of the \ref INVALID symmetric edge is 1. 597 ///\return The ID of the edge \c e. 598 static int id(SymEdge e) { return Parent::id(e); } 599 600 /// Adds a new node to the graph. 601 602 /// \warning It adds the new node to the front of the list. 603 /// (i.e. the lastly added node becomes the first.) 604 Node addNode() { 605 return Parent::addNode(); 606 } 607 608 SymEdge addEdge(Node u, Node v) { 609 SymEdge se = Parent::addEdge(u, v); 610 edge_maps.add(forward(se)); 611 edge_maps.add(backward(se)); 612 return se; 613 } 614 615 /// Finds an edge between two nodes. 616 617 /// Finds an edge from node \c u to node \c v. 618 /// 619 /// If \c prev is \ref INVALID (this is the default value), then 620 /// It finds the first edge from \c u to \c v. Otherwise it looks for 621 /// the next edge from \c u to \c v after \c prev. 622 /// \return The found edge or INVALID if there is no such an edge. 623 Edge findEdge(Node u, Node v, Edge prev = INVALID) 624 { 625 if (prev == INVALID  id(prev) & 1 == 0) { 626 SymEdge se = Parent::findEdge(u, v, SymEdge(prev)); 627 if (se != INVALID) return forward(se); 628 } else { 629 SymEdge se = Parent::findEdge(v, u, SymEdge(prev)); 630 if (se != INVALID) return backward(se); 631 } 632 return INVALID; 633 } 634 635 // /// Finds an symmetric edge between two nodes. 636 637 // /// Finds an symmetric edge from node \c u to node \c v. 638 // /// 639 // /// If \c prev is \ref INVALID (this is the default value), then 640 // /// It finds the first edge from \c u to \c v. Otherwise it looks for 641 // /// the next edge from \c u to \c v after \c prev. 642 // /// \return The found edge or INVALID if there is no such an edge. 643 644 // SymEdge findEdge(Node u, Node v, SymEdge prev = INVALID) 645 // { 646 // if (prev == INVALID  id(prev) & 1 == 0) { 647 // SymEdge se = Parent::findEdge(u, v, SymEdge(prev)); 648 // if (se != INVALID) return se; 649 // } else { 650 // SymEdge se = Parent::findEdge(v, u, SymEdge(prev)); 651 // if (se != INVALID) return se; 652 // } 653 // return INVALID; 654 // } 655 656 public: 657 658 void clear() { 659 edge_maps.clear(); 660 Parent::clear(); 661 } 662 663 static Edge opposite(Edge e) { 664 return Edge(id(e) ^ 1); 665 } 666 667 static Edge forward(SymEdge e) { 668 return Edge(id(e) << 1); 669 } 670 671 static Edge backward(SymEdge e) { 672 return Edge((id(e) << 1)  1); 673 } 674 675 }; 301 676 ///Graph for bidirectional edges. 302 677 … … 319 694 //\sa SmartGraph. 320 695 321 class SymSmartGraph : public SmartGraph696 /* class SymSmartGraph : public SmartGraph 322 697 { 323 698 public: … … 354 729 355 730 356 };731 };*/ 357 732 358 733 /// @}
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